Added backend loader test case
Added backend loader test case

FlipperPA/wagtail,timorieber/wagtail,tangentlabs/wagtail,takeshineshiro/wagtail,quru/wagtail,davecranwell/wagtail,nutztherookie/wagtail,mikedingjan/wagtail,timorieber/wagtail,thenewguy/wagtail,gogobook/wagtail,kurtw/wagtail,JoshBarr/wagtail,Toshakins/wagtail,JoshBarr/wagtail,nrsimha/wagtail,mayapurmedia/wagtail,dresiu/wagtail,chrxr/wagtail,inonit/wagtail,tangentlabs/wagtail,m-sanders/wagtail,kaedroho/wagtail,taedori81/wagtail,bjesus/wagtail,nrsimha/wagtail,jnns/wagtail,stevenewey/wagtail,jorge-marques/wagtail,marctc/wagtail,100Shapes/wagtail,quru/wagtail,takeflight/wagtail,benjaoming/wagtail,100Shapes/wagtail,thenewguy/wagtail,KimGlazebrook/wagtail-experiment,rv816/wagtail,iansprice/wagtail,nimasmi/wagtail,Klaudit/wagtail,Toshakins/wagtail,taedori81/wagtail,kurtw/wagtail,rjsproxy/wagtail,stevenewey/wagtail,zerolab/wagtail,nilnvoid/wagtail,WQuanfeng/wagtail,FlipperPA/wagtail,nealtodd/wagtail,jordij/wagtail,zerolab/wagtail,rv816/wagtail,hanpama/wagtail,thenewguy/wagtail,nimasmi/wagtail,thenewguy/wagtail,kurtrwall/wagtail,helenwarren/pied-wagtail,jordij/wagtail,gasman/wagtail,zerolab/wagtail,Tivix/wagtail,taedori81/wagtail,mephizzle/wagtail,gasman/wagtail,rv816/wagtail,serzans/wagtail,Pennebaker/wagtail,wagtail/wagtail,taedori81/wagtail,bjesus/wagtail,Tivix/wagtail,rjsproxy/wagtail,100Shapes/wagtail,takeshineshiro/wagtail,wagtail/wagtail,iho/wagtail,zerolab/wagtail,jorge-marques/wagtail,takeflight/wagtail,torchbox/wagtail,mixxorz/wagtail,gogobook/wagtail,hanpama/wagtail,wagtail/wagtail,iansprice/wagtail,torchbox/wagtail,kurtw/wagtail,m-sanders/wagtail,janusnic/wagtail,JoshBarr/wagtail,takeflight/wagtail,janusnic/wagtail,mixxorz/wagtail,iansprice/wagtail,Pennebaker/wagtail,m-sanders/wagtail,nutztherookie/wagtail,dresiu/wagtail,serzans/wagtail,Toshakins/wagtail,helenwarren/pied-wagtail,chimeno/wagtail,mjec/wagtail,chrxr/wagtail,benjaoming/wagtail,KimGlazebrook/wagtail-experiment,m-sanders/wagtail,nilnvoid/wagtail,rv816/wagtail,hanpama/wagtail,darith27/wagtail,kaedroho/wagtail,jordij/wagtail,chimeno/wagtail,nrsimha/wagtail,bjesus/wagtail,gasman/wagtail,hamsterbacke23/wagtail,mephizzle/wagtail,quru/wagtail,rjsproxy/wagtail,bjesus/wagtail,Toshakins/wagtail,WQuanfeng/wagtail,jorge-marques/wagtail,lojack/wagtail,kaedroho/wagtail,mayapurmedia/wagtail,benemery/wagtail,kurtrwall/wagtail,nealtodd/wagtail,helenwarren/pied-wagtail,rsalmaso/wagtail,stevenewey/wagtail,kurtrwall/wagtail,iho/wagtail,kurtrwall/wagtail,chrxr/wagtail,benjaoming/wagtail,Tivix/wagtail,gasman/wagtail,mephizzle/wagtail,jnns/wagtail,willcodefortea/wagtail,willcodefortea/wagtail,benemery/wagtail,iansprice/wagtail,lojack/wagtail,willcodefortea/wagtail,chimeno/wagtail,dresiu/wagtail,nimasmi/wagtail,rsalmaso/wagtail,stevenewey/wagtail,Klaudit/wagtail,hanpama/wagtail,inonit/wagtail,nealtodd/wagtail,kurtw/wagtail,benemery/wagtail,mikedingjan/wagtail,nilnvoid/wagtail,kaedroho/wagtail,chimeno/wagtail,thenewguy/wagtail,nrsimha/wagtail,jnns/wagtail,torchbox/wagtail,davecranwell/wagtail,serzans/wagtail,darith27/wagtail,WQuanfeng/wagtail,kaedroho/wagtail,davecranwell/wagtail,mixxorz/wagtail,lojack/wagtail,rsalmaso/wagtail,timorieber/wagtail,gogobook/wagtail,rsalmaso/wagtail,mjec/wagtail,KimGlazebrook/wagtail-experiment,mikedingjan/wagtail,Tivix/wagtail,Pennebaker/wagtail,zerolab/wagtail,nilnvoid/wagtail,inonit/wagtail,quru/wagtail,dresiu/wagtail,wagtail/wagtail,mjec/wagtail,hamsterbacke23/wagtail,takeshineshiro/wagtail,gogobook/wagtail,WQuanfeng/wagtail,JoshBarr/wagtail,serzans/wagtail,mixxorz/wagtail,gasman/wagtail,torchbox/wagtail,marctc/wagtail,dresiu/wagtail,benemery/wagtail,nealtodd/wagtail,iho/wagtail,KimGlazebrook/wagtail-experiment,nutztherookie/wagtail,jorge-marques/wagtail,hamsterbacke23/wagtail,darith27/wagtail,rjsproxy/wagtail,mayapurmedia/wagtail,marctc/wagtail,nimasmi/wagtail,hamsterbacke23/wagtail,timorieber/wagtail,davecranwell/wagtail,Pennebaker/wagtail,Klaudit/wagtail,taedori81/wagtail,mayapurmedia/wagtail,benjaoming/wagtail,mixxorz/wagtail,jorge-marques/wagtail,willcodefortea/wagtail,FlipperPA/wagtail,chimeno/wagtail,mikedingjan/wagtail,tangentlabs/wagtail,tangentlabs/wagtail,mephizzle/wagtail,takeshineshiro/wagtail,iho/wagtail,rsalmaso/wagtail,jnns/wagtail,jordij/wagtail,mjec/wagtail,janusnic/wagtail,janusnic/wagtail,takeflight/wagtail,FlipperPA/wagtail,darith27/wagtail,inonit/wagtail,Klaudit/wagtail,nutztherookie/wagtail,wagtail/wagtail,chrxr/wagtail,marctc/wagtail